A class of service in which the ATM network makes a "best effort" to meet the traffic's bit-rate requirements. ABR requires the transmitting end-station to assume responsibility for data that cannot get through and does not guarantee delivery.
Quality of Service class defined by the ATM Forum for ATM networks where a timing relationship is not required between sending and receiving stations.
An ATM service category that is used for data traffic. The ABR categorycan tolerate delays. For each data transmission, ABR negotiates a rangeof acceptable bandwidths and an acceptable cell loss ratio (the number ofcells that can be lost in any transmission).
Quality of Service (QOS) used for connections that are not delay or time sensitive - for example, connections that carry spontaneous or bursty data.
An ATM layer service where the limiting ATM-layer transfer characteristics provided by the network may change subsequent to the connection established.
Available Bit Rate (ABR) is a service used in ATM networks when source and destination don't need to be synchronized. ABR does not guarantee against delay or data loss. ABR mechanisms allow the network to allocate the available bandwidth fairly over the present ABR sources.